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  4. Al Mukallā

May Weather in Al Mukallā Yemen

Daily high temperatures are around 92°F, rarely falling below 88°F or exceeding 96°F. The highest daily average high temperature is 92°F on May 29.

Daily low temperatures increase by 3°F, from 80°F to 83°F, rarely falling below 77°F or exceeding 86°F.

For reference, on May 28, the hottest day of the year, temperatures in Al Mukallā typically range from 83°F to 92°F, while on January 9, the coldest day of the year, they range from 69°F to 82°F.

Average High and Low Temperature in May in Al Mukallā

Average High and Low Temperature in May in Al MukallāMay112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313170°F70°F75°F75°F80°F80°F85°F85°F90°F90°F95°F95°F100°F100°F105°F105°FAprJunMay 2892°FMay 2892°F83°F83°FMay 191°FMay 191°F80°F80°FMay 1192°FMay 1192°F81°F81°F
The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on May. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Average Hourly Temperature in May in Al Mukallā

Average Hourly Temperature in May in Al MukallāMay112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMAprJunwarmwarmhothot
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Sông Cầu, Vietnam (4,022 miles away) is the far-away foreign place with temperatures most similar to Al Mukallā (view comparison).

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The month of May in Al Mukallā experiences very rapidly increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 46% to 73%.

The clearest day of the month is May 1, with clear, mostly clear, or partly cloudy conditions 54% of the time.

For reference, on June 4, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 73%, while on November 27, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 79%.

Cloud Cover Categories in May in Al Mukallā

Cloud Cover Categories in May in Al MukallāMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%AprJunMay 154%May 154%May 3127%May 3127%May 1142%May 1142%May 2132%May 2132%clearmostly clearpartly cloudymostly cloudyovercast
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

Over the course of May in Al Mukallā, the length of the day is gradually increasing. From the start to the end of the month, the length of the day increases by 16 minutes, implying an average daily increase of 32 seconds, and weekly increase of 3 minutes, 46 seconds.

The shortest day of the month is May 1, with 12 hours, 40 minutes of daylight and the longest day is May 31, with 12 hours, 56 minutes of daylight.

Hours of Daylight and Twilight in May in Al Mukallā

The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The latest sunrise of the month in Al Mukallā is 5:20 AM on May 1 and the earliest sunrise is 7 minutes earlier at 5:13 AM on May 31.

The earliest sunset is 6:00 PM on May 1 and the latest sunset is 9 minutes later at 6:09 PM on May 31.

Daylight saving time is not observed in Al Mukallā during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 5:15 AM and sets 12 hours, 59 minutes later, at 6:14 PM, while on December 21, the shortest day of the year, it rises at 6:03 AM and sets 11 hours, 16 minutes later, at 5:19 PM.

Sunrise & Sunset with Twilight in May in Al Mukallā

The solar day over the course of May. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

Solar Elevation and Azimuth in May in Al Mukallā

Solar Elevation and Azimuth in May in Al MukallāMay112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMAprJun0010102020203030404050505060607070808080000101020203030304040505060606070708080
northeastsouthwest
Solar elevation and azimuth over the course of May 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The figure below presents a compact representation of key lunar data for May 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

Moon Rise, Set & Phases in May in Al Mukallā

Moon Rise, Set & Phases in May in Al MukallāMay112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMAprJunApr 89:22 PMApr 89:22 PMApr 242:50 AMApr 242:50 AMMay 86:23 AMMay 86:23 AMMay 234:54 PMMay 234:54 PMJun 63:38 PMJun 63:38 PMJun 224:09 AMJun 224:09 AM5:07 AM5:07 AM5:44 PM5:44 PM5:36 PM5:36 PM5:27 AM5:27 AM5:12 AM5:12 AM6:28 PM6:28 PM6:06 PM6:06 PM5:35 AM5:35 AM4:45 AM4:45 AM6:17 PM6:17 PM5:53 PM5:53 PM5:16 AM5:16 AM
The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.
May 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
50%12:00 AMESE11:34 AMWSW-5:48 AMS233,014 mi
2
43%12:49 AMESE12:34 PMWSW-6:42 AMS230,612 mi
3
31%1:35 AMESE1:33 PMWSW-7:34 AMS228,484 mi
4
20%2:18 AME2:30 PMW-8:24 AMS226,827 mi
5
11%2:59 AME3:27 PMW-9:12 AMS225,847 mi
6
5%3:41 AME4:26 PMW-10:02 AMS225,721 mi
7
1%4:25 AMENE5:26 PMWNW-10:53 AMN226,555 mi
8
0%5:12 AMENE6:28 PMWNW-11:48 AMN228,349 mi
9
2%6:04 AMENE7:32 PMWNW-12:46 PMN230,990 mi
10
7%6:59 AMENE8:34 PMWNW-1:46 PMN234,255 mi
11
14%7:57 AMENE9:34 PMWNW-2:46 PMN237,850 mi
12
22%8:56 AMENE10:28 PMWNW-3:43 PMN241,454 mi
13
32%9:54 AMENE11:16 PMWNW-4:36 PMN244,771 mi
14
41%10:48 AMENE11:58 PMWNW-5:25 PMN247,559 mi
15
50%11:39 AMENE--6:09 PMN249,650 mi
16
61%-12:36 AMWNW12:27 PMENE6:51 PMS250,948 mi
17
70%-1:11 AMW1:13 PME7:30 PMS251,427 mi
18
79%-1:45 AMW1:59 PME8:08 PMS251,127 mi
19
86%-2:17 AMW2:44 PME8:47 PMS250,137 mi
20
92%-2:51 AMW3:30 PME9:28 PMS248,587 mi
21
97%-3:26 AMWSW4:19 PMESE10:11 PMS246,625 mi
22
99%-4:04 AMWSW5:11 PMESE10:58 PMS244,409 mi
23
100%-4:47 AMWSW6:06 PMESE11:50 PMS242,087 mi
24
99%-5:35 AMWSW7:05 PMESE--
25
98%-6:28 AMWSW8:04 PMESE12:46 AMS239,786 mi
26
94%-7:26 AMWSW9:02 PMESE1:45 AMS237,601 mi
27
87%-8:27 AMWSW9:57 PMESE2:45 AMS235,591 mi
28
79%-9:29 AMWSW10:47 PMESE3:43 AMS233,784 mi
29
69%-10:29 AMWSW11:33 PMESE4:39 AMS232,196 mi
30
50%-11:27 AMWSW-5:30 AMS230,845 mi
31
45%12:16 AME12:23 PMW-6:19 AMS229,768 mi

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The chance that a given day will be muggy in Al Mukallā is increasing during May, rising from 87% to 95% over the course of the month.

For reference, on August 26, the muggiest day of the year, there are muggy conditions 99% of the time, while on January 26, the least muggy day of the year, there are muggy conditions 37% of the time.

Humidity Comfort Levels in May in Al Mukallā

Humidity Comfort Levels in May in Al MukallāMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%AprJunMay 187%May 187%May 3195%May 3195%May 1191%May 1191%May 2194%May 2194%miserablemiserableoppressiveoppressivemuggymuggyhumidhumiddrydry
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Al Mukallā is essentially constant during May, remaining within 0.3 miles per hour of 6.3 miles per hour throughout.

For reference, on July 27, the windiest day of the year, the daily average wind speed is 11.8 miles per hour, while on May 13, the calmest day of the year, the daily average wind speed is 6.0 miles per hour.

The lowest daily average wind speed during May is 6.0 miles per hour on May 16.

Average Wind Speed in May in Al Mukallā

Average Wind Speed in May in Al MukallāMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mphAprJunMay 166.0 mphMay 166.0 mphMay 16.1 mphMay 16.1 mphMay 316.6 mphMay 316.6 mph
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The wind direction in Al Mukallā during May is predominantly out of the east from May 1 to May 22 and the south from May 22 to May 31.

Wind Direction in May in Al Mukallā

Wind Direction in May in Al MukallāESWMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%20%80%40%60%60%40%80%20%100%0%AprJunwesteastsouthnorth
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Al Mukallā is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average surface water temperature in Al Mukallā is gradually increasing during May, rising by 2°F, from 84°F to 86°F, over the course of the month.

Average Water Temperature in May in Al Mukallā

Average Water Temperature in May in Al MukallāMay112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313179°F79°F80°F80°F81°F81°F82°F82°F83°F83°F84°F84°F85°F85°F86°F86°F87°F87°F88°F88°FAprJunMay 184°FMay 184°FMay 3186°FMay 3186°FMay 1185°FMay 1185°FMay 2186°FMay 2186°F
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

Temperatures in Al Mukallā are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year.

Time Spent in Various Temperature Bands and the Growing Season in May in Al Mukallā

Time Spent in Various Temperature Bands and the Growing Season in May in Al MukallāMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%AprJun100%May 16100%May 16warmhotcomfortablesweltering
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

The average accumulated growing degree days in Al Mukallā are very rapidly increasing during May, increasing by 1,037°F, from 3,427°F to 4,464°F, over the course of the month.

Growing Degree Days in May in Al Mukallā

The average growing degree days accumulated over the course of May, with 25th to 75th and 10th to 90th percentile bands.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy in Al Mukallā is decreasing during May, falling by 1.2 kWh, from 7.2 kWh to 6.0 kWh, over the course of the month.

Average Daily Incident Shortwave Solar Energy in May in Al Mukallā

Average Daily Incident Shortwave Solar Energy in May in Al MukallāMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWhAprJunMay 17.2 kWhMay 17.2 kWhMay 316.0 kWhMay 316.0 kWhMay 117.0 kWhMay 117.0 kWhMay 216.5 kWhMay 216.5 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

For the purposes of this report, the geographical coordinates of Al Mukallā are 14.542 deg latitude, 49.124 deg longitude, and 128 ft elevation.

The topography within 2 miles of Al Mukallā contains very significant variations in elevation, with a maximum elevation change of 1,263 feet and an average elevation above sea level of 253 feet. Within 10 miles contains very significant variations in elevation (4,295 feet). Within 50 miles also contains extreme variations in elevation (7,165 feet).

The area within 2 miles of Al Mukallā is covered by bare soil (70%), water (17%), and sparse vegetation (13%), within 10 miles by water (43%) and bare soil (42%), and within 50 miles by water (44%) and bare soil (40%).

This report illustrates the typical weather in Al Mukallā, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Temperature and Dew Point

There is only a single weather station, Riyan International Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Al Mukallā.

At a distance of 30 kilometers from Al Mukallā, closer than our threshold of 150 kilometers, this station is deemed sufficiently nearby to be relied upon as our primary source for temperature and dew point records.

The station records are corrected for the elevation difference between the station and Al Mukallā according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

Please note that the station records themselves may additionally have been back-filled using other nearby stations or the MERRA-2 reanalysis.

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for airports and weather stations are provided by AskGeo.com .

Maps are © OpenStreetMap contributors.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

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